"To our knowledge, this species has never been observed in the wild." Researchers celebrate after capturing video of shark ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and ...

The 'David Packard' is named for the Silicon Valley pioneer who donated more than $1 billion to ocean research.

This rare footage gives us a shark’s-eye view of the interactions between these two very different kinds of sharks.” ...